Professional experience1980-81 Assistant Professor of Economics, New York University
1981-85 Assistant Professor of Economics, Erasmus University Rotterdam
1983,84,93,2009 Visiting Associate Professor of Economics, New York University
1986- Associate Professor of Economics, Tilburg University2009 Visiting Scholar, Bar-Ilan University

96. "Potential Explanations of the Real Share Maintenance of the Services," with R. Schettkat in Th. ten Raa and R. Schettkat (eds.), The Growth of Service Industries, The Paradox of Exploding Costs and Persistent Demand, 29-41,
Edward Elgar Publishing (2001)

98. "Light on the Mystery of Service Sector Growth: Some Stylized Facts," 211-17, with R. Schettkat in Th. ten Raa and R. Schettkat (eds.), The Growth of Service Industries, The Paradox of Exploding Costs and Persistent Demand,
Edward Elgar Publishing (2001)

111. "A New Way to Locate Comparative Advantages of India and Bangladesh on the Basis of Fundamentals Only," with C. Sikdar and D. Chakraborty in R. Acharyya (ed.), Essays on International Trade, Theory and Policy for the Developing Countries, 169-97, Allied Publishers Private Limited, Kolkata (2005) Part 1, Part 2, Part 3, Part 4